公开(公告)号：US07221454B2

公开(公告)日：2007-05-22

申请号：US10504796

申请日：2003-02-13

Applicant: D. Scott Hampton ,  Shankar Krishnan ,  James Rix

Inventor： D. Scott Hampton ,  Shankar Krishnan ,  James Rix

IPC: G01J4/00

CPC classification number: G01J4/04 ,  G01J3/447

Abstract: In a device for measuring the complete polarization state of light over a spectral bandwidth, an optical input signal (41) with wavelengths of light within a spectral band is incident on two or more diffraction gratings (42, 44, 46, 48), or incident from at least two directions on one or more diffraction gratings (72, 74), and the intensity is measured as a function of wavelength for at least four of the diffraction spectra produced by the grating(s). The polarization state of light is then calculated as a function of wavelength over the spectral bandwidth from the intensity measurements.

Abstract translation: 在用于在光谱带宽上测量光的完全偏振状态的装置中，光谱波段内的波长的光输入信号（41）入射到两个或更多个衍射光栅（42,44,46,48）上，或 在一个或多个衍射光栅（72,74）上从至少两个方向入射，并且对于由光栅产生的至少四个衍射光谱，测量强度作为波长的函数。 然后，根据强度测量，光的偏振状态被计算为光谱带宽上的波长的函数。

公开(公告)号：US5812270A

公开(公告)日：1998-09-22

申请号：US932314

申请日：1997-09-17

Applicant: D. Scott Hampton ,  Eugene F. Kalley ,  Sam Paris ,  David W. Jenkins

Inventor： D. Scott Hampton ,  Eugene F. Kalley ,  Sam Paris ,  David W. Jenkins

IPC: G01B11/00 ,  G01J1/04 ,  G01J1/42

CPC classification number: G01J1/42 ,  G01B11/00 ,  G01J1/04 ,  G01J1/0228

Abstract: A contamination detection apparatus is provided for measuring an amount of contamination on an optically transmitting element or pane. The optically transmitting element is capable of transmitting electromagnetic radiation. The contamination detection apparatus includes a contamination detection (CD) radiation source for providing a source intensity of radiation. The source intensity or radiation passes through the optically transmitting element at least one time. A reference detector is also provided for detecting the source intensity of radiation, and the reference detector has a reference output level that is representative of the source intensity.

Abstract translation: 提供污染检测装置，用于测量光学传输元件或窗格上的污染物量。 光传输元件能够传输电磁辐射。 污染检测装置包括用于提供辐射源强度的污染检测（CD）辐射源。 源强度或辐射至少一次通过光传输元件。 还提供用于检测辐射源强度的参考检测器，并且参考检测器具有代表源强度的参考输出电平。